When Hitler Stole Pink Rabbit by Judith Kerr
Anna is not sure who Hitler is, but she sees his face on posters all over Berlin. Then one morning, Anna and her brother awake to find her father gone! Her mother explains that their father has had to leave and soon they will secretly join him. Anna just doesn't understand. Why do their parents keep insisting that Germany is no longer safe for Jews like them? Because of Hitler, Anna must leave everything behind.